add action for marking forum as read

app/controllers/forum_topics_controller.rb

@@ -55,6 +55,11 @@ class ForumTopicsController < ApplicationController
     respond_with(@forum_topic)
   end
 
+  def mark_all_as_read
+    CurrentUser.user.update_attribute(:last_forum_read_at, Time.now)
+    redirect_to forum_topics_path, :notice => "All topics marked as read"
+  end
+
 private
   def update_last_forum_read_at
     return if CurrentUser.is_anonymous?

app/views/forum_topics/_secondary_links.html.erb

@@ -3,6 +3,7 @@
     <li><%= link_to "Listing", forum_topics_path %></li>
     <li><%= link_to "New", new_forum_topic_path %></li>
     <li><%= link_to "Search", search_forum_posts_path %></li>
+    <li><%= link_to "Mark all as read", mark_all_as_read_forum_topics_path, :method => :post %></li>
     <li><%= link_to "Help", wiki_pages_path(:title => "help:forum") %></li>
     <% if @forum_topic %>
       <li>|</li>

config/routes.rb

@@ -91,6 +91,9 @@ Danbooru::Application.routes.draw do
     member do
       post :undelete
     end
+    collection do
+      post :mark_all_as_read
+    end
   end
   resources :ip_bans
   resources :janitor_trials do